Defence Investment Plan: Sovereignty will be built in the supply chain
Words by Gareth Wood, Defence Director The Defence Investment Plan should not be read simply as another spending announcement. The real test will be whether it helps Britain rebuild the industrial depth, sovereign capability and manufacturing resilience needed to compete in a more dangerous world. The headline numbers are significant. The Government has set out £298 billion of defence investment over the next four years, including an additional £15 billion through the Defence Investment Plan, while taking core NATO defence spending to 2.7% of GDP from 2027/28. But the more important question is not only how much is being spent, but where that money lands. The Government’s language around the plan was deliberately industrial. The message was to “back British”, with defence spending used wherever possible to support British workers, businesses and innovators. He also spoke directly about bringing SMEs and start-ups into defence supply chains, ensuring the economic benefit is felt across regions and communities, not simply captured by the traditional prime contractors. That matters because modern defence capability is no longer built by a small number of major platforms alone. The conflicts of today and tomorrow depend on drones, autonomy, AI, cyber, sensors, counter-drone systems, software, secure communications, advanced manufacturing and rapid production capacity. These are areas where smaller, specialist and high-growth businesses can be decisive. But sovereign capability cannot exist only at the top of the supply chain. It depends on the depth beneath it: the specialist manufacturers, component suppliers, software firms, materials businesses, testing facilities and engineering teams that allow capability to be produced, upgraded and replenished at scale. This is the central challenge. Britain may have world-class innovators, but if those firms cannot access contracts, finance, facilities, production partners or qualification routes, innovation risks remaining trapped at prototype stage. The real test of the DIP will be whether it helps create a supply chain that can not only invent, but manufacture, certify, deliver and sustain capability at pace. There is another constraint that receives far less attention than funding or procurement: capability. Defence, nuclear and advanced manufacturing are all competing for the same engineers, commercial specialists and transformational leaders needed to deliver growth. As investment accelerates, the organisations that succeed will not necessarily be those with the largest budgets, but those that can attract, develop and retain the talent required to turn investment into delivery. The UK’s sovereign capability challenge is therefore not only industrial, it is also a leadership and workforce challenge. For British SMEs, the opportunity is clear, but so is the challenge. Many already have the technical expertise, agility and ambition that defence needs. What they often lack is predictable demand, simplified procurement, patient capital and the manufacturing infrastructure to move from concept to volume production. That is why the Defence Office for Small Business Growth matters. A clearer front door into defence is welcome, as is the commitment to increase MOD spending with SMEs. But access alone is not enough. If Britain wants sovereign capability, it must help SMEs scale. That means clearer demand signals, faster procurement, better qualification routes, investment in facilities and a willingness to bring innovative firms into major programmes earlier. It also means primes working differently with smaller businesses, not simply treating them as peripheral suppliers, but as essential partners in national resilience. Or it requires SMEs to work and unify differently as a collective, taking control via collaboration, to challenge the programme delivery status quo. The lesson from Ukraine has been clear. Capability advantage is no longer only about having the most exquisite platform. It is about speed, adaptability, resilience and the ability to replenish. It is about whether a nation can surge production when the strategic environment changes. Yet perhaps the biggest risk to this delivery is neither funding nor intent. It is execution. Across defence, nuclear and advanced manufacturing, organisations are increasingly be forced to compete for a limited pool of experienced leaders capable of delivering complex programmes, scaling industrial operations and managing highly regulated environments. As investment increases, the ability to attract the right Technical and operational leadership may become as important as access to capital itself. A sovereign capability strategy ultimately depends on having the people capable of turning policy into outcomes and investment into delivery. The Defence Investment Plan sets the direction. The supply chain, its leadership and its people will determine whether Britain can deliver. Veredus partners with organisations across defence, aerospace, nuclear and critical infrastructure to identify and secure the leadership and specialist talent that enables complex programmes, industrial growth and long-term capability development. To discuss your leadership requirements, please contact gareth.wood@veredus.co.uk